stpxSMSTPortAdminMSTMode 1.3.6.1.4.1.9.9.82.1.14.7.1.6

The desired MST mode of this port. preStandard -- this port is administratively configured to transmit pre-standard, i.e. pre IEEE MST, BPDUs. auto -- the BPDU transmission mode of this port is based on automatic detection of neighbor ports.